# Source vs Belly Babe

The clearest difference is iOS requirement: Source at 15.1 against Belly Babe's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Source sells 3 in-app purchases, starting at $7.99 per month and Belly Babe sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Source ships an update fortnightly, Belly Babe every 9 days. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Source | Belly Babe |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Size | 62 MB | 31 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CHANG-WEI FU](https://appshunter.io/developer/1837600448) | [VCVC](https://appshunter.io/developer/1852430838) |

## What reviewers say

### Source

[App page](https://appshunter.io/ios/app/source-ai-copilot/id6756547151)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Source Pro (月費) | $7.99 | per month |
| Source Pro (年費) | $49.99 | per year |
| Source Pro 創始會員 | $99.99 | one-time |


### Belly Babe

[App page](https://appshunter.io/ios/app/belly-babe-pregnancy-journal/id6810352785)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Membership | $3.99 | per month |
| Lifetime Membership | $12.99 | one-time |


## Frequently asked questions

### Is Source free?

Source is free to download, with in-app purchases available.

### Is Belly Babe free?

Belly Babe is free to download, with in-app purchases available.

### Do Source or Belly Babe have ads?

Neither Source nor Belly Babe shows ads.

### Which is updated more often, Source or Belly Babe?

Source ships an update fortnightly, and Belly Babe every 9 days. Most recently, Source was updated on October 25, 2026 and Belly Babe on October 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*